<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>空间分析服务-点定里程</title>
    <script type="text/javascript" include="bootstrap-css" src="../js/include-web.js"></script>
    <script type="text/javascript" src="../../dist/include-openlayers.js"></script>
    <style>
        .ol-popup {
            position: absolute;
            background-color: white;
            -webkit-filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.2));
            filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.2));
            padding: 15px;
            border-radius: 10px;
            border: 1px solid #cccccc;
            bottom: 12px;
            left: -50px;
            min-width: 300px;
        }

        .ol-popup:after, .ol-popup:before {
            top: 100%;
            border: solid transparent;
            content: " ";
            height: 0;
            width: 0;
            position: absolute;
            pointer-events: none;
        }

        .ol-popup:after {
            border-top-color: white;
            border-width: 10px;
            left: 48px;
            margin-left: -10px;
        }

        .ol-popup:before {
            border-top-color: #cccccc;
            border-width: 11px;
            left: 48px;
            margin-left: -11px;
        }

    </style>
</head>
<body style=" margin: 0;overflow: hidden;background: #fff;width: 100%;height:100%">
<div id="map" style="width: 100%;height:100%"></div>
<div id="popup" class="ol-popup">
    <div id="popup-content"></div>
</div>
<script type="text/javascript">
    var map, options, queryBySQLParams, queryBySQLService, resultLayer,
        routeCalculateMeasureParameters, routeCalculateMeasureService,
        baseUrl = (window.isLocal ? document.location.protocol + "//" + document.location.host : "http://support.supermap.com.cn:8090")+"/iserver/services/map-changchun/rest/maps/长春市区图",
        serviceUrl = (window.isLocal ? document.location.protocol + "//" + document.location.host : "http://support.supermap.com.cn:8090")+"/iserver/services/spatialanalyst-changchun/restjsr/spatialanalyst";
    var container = document.getElementById('popup');
    var content = document.getElementById('popup-content');
    var overlay = new ol.Overlay(({
        element: container,
        autoPan: true,
        autoPanAnimation: {
            duration: 250
        }
    }));
    var extent = [48.4, -7668.25, 8958.85, -55.58];
    var projection = new ol.proj.Projection({
        extent: extent,
        units: 'm'
    });
    var mapService = new ol.supermap.MapService(baseUrl);
    mapService.getMapInfo(function (serviceResult) {
        var mapJSONObj = serviceResult.result;
        map = new ol.Map({
            target: 'map',
            controls: ol.control.defaults({attributionOptions: {collapsed: false}})
                .extend([new ol.supermap.control.Logo()]),
            view: new ol.View({
                center: [4503.62, -3861.91],
                zoom: 2,
                extent: extent,
                projection: projection
            }),
            overlays: [overlay]
        });
        options = ol.source.TileSuperMapRest.optionsFromMapJSON(baseUrl, mapJSONObj);
        var layer = new ol.layer.Tile({
            source: new ol.source.TileSuperMapRest(options)
        });
        map.addLayer(layer);
        routeCalculateMeasureProcess();
    });


    function routeCalculateMeasureProcess() {
        //通过SQL查询的方法建立路由,并添加到地图上
        queryBySQLService = new ol.supermap.QueryService(baseUrl);
        queryBySQLParams = new SuperMap.QueryBySQLParameters({
            queryParams: [
                new SuperMap.FilterParameter({
                    name: "RouteDT_road@Changchun",
                    attributeFilter: "RouteID=1690"
                })
            ]
        });
        queryBySQLService.queryBySQL(queryBySQLParams, function (SQLQueryServiceResult) {
            var queryBySQLResult = SQLQueryServiceResult.result.recordsets[0].features;
            var pathSource = new ol.source.Vector({
                features: (new ol.format.GeoJSON()).readFeatures(queryBySQLResult)
            });
            pathLayer = new ol.layer.Vector({
                source: pathSource,
                style: new ol.style.Style({
                    stroke: new ol.style.Stroke({
                        color: 'rgba(100, 100, 225, 10)',
                        width: 3
                    })
                })
            });
            map.addLayer(pathLayer);

            //将形成路由的点提出来，为了构造下面点定里程服务sourceRoute
            var pointsList = [];
            var routeObj = queryBySQLResult.features[0].geometry.coordinates[0];
            for (var i = 0; i < routeObj.length; i++) {
                pointsList.push([routeObj[i][0], routeObj[i][1], routeObj[i][2]])
            }
            var routeLine = new ol.geom.LineString([pointsList]);

            //在组成路由的点中选取一个查询点(数组中第8个点),并添加到地图上
            var point = new ol.geom.Point([routeObj[7][0], routeObj[7][1]]);

            //点定里程服务
            routeCalculateMeasureService = new ol.supermap.SpatialAnalystService(serviceUrl);
            routeCalculateMeasureParameters = new SuperMap.RouteCalculateMeasureParameters({
                "sourceRoute": routeLine,   //必选,路由类型
                "point": point,            //必选
                "tolerance": 10,
                "isIgnoreGap": false
            });
            routeCalculateMeasureService.routeCalculateMeasure(routeCalculateMeasureParameters, function (routeCaculateServiceResult) {
                var vectorSource = new ol.source.Vector({
                    features: [new ol.Feature(point)],
                });
                resultLayer = new ol.layer.Vector({
                    source: vectorSource
                });
                map.addLayer(resultLayer);
                var innerHTML = "查询获取的M值为:" + routeCaculateServiceResult.result.measure;
                content.innerHTML = innerHTML;
                overlay.setPosition([point.getCoordinates()[0], point.getCoordinates()[1]]);
            });
        });
    }
</script>
</body>
</html>